Go to
www.dynojet.com and enter your location,they will tell you all the locations of there chassis dynos in your area. rent an hour of time and you will have your answerers on timing and jetting. unlike an engine dyno with a variable load control valve the Dyno jet unit has a fixed weight you accelerate so it doesn't change run to run,you can see any change at all.at the track there are to many variables to find just a few H.P. on the dyno one degree timing change will show up and you can overlay the graphs from run to run and see any gain or loss.Bill